diff --git a/json_schema/ontology_json/disease_ontology.json b/json_schema/ontology_json/disease_ontology.json
index 9adbd57be..d823eb661 100644
--- a/json_schema/ontology_json/disease_ontology.json
+++ b/json_schema/ontology_json/disease_ontology.json
@@ -10,14 +10,24 @@
         "ontology": {
             "description": "An optional ontology reference in format where prefix_ indicates which ontology",
             "type": "string",
-            "graph_restriction":  {
-                "ontologies" : ["obo:efo", "obo:mondo"],
-                "classes": ["MONDO:0000001", "EFO:0000408"],
-                "relations": ["rdfs:subClassOf"],
+            "graph_restriction": {
+                "ontologies": [
+                    "obo:efo",
+                    "obo:mondo"
+                ],
+                "classes": [
+                    "MONDO:0000001",
+                    "EFO:0000408"
+                ],
+                "relations": [
+                    "rdfs:subClassOf"
+                ],
                 "direct": false,
                 "include_self": false
+            }
         }
     },
+
     "required": [
         "text"
     ],